THE playing career of former Brisbane Lion Aaron Cornelius is in limbo after dislocating his left knee in a horrific playing incident at the weekend.

Cornelius, player-coach of Tasmanian State League team Glenorchy, took a spectacular goalsquare mark before landing awkwardly and dislocating his knee.

The impact also severed a blood vessel that supplies blood below the knee.

Cornelius has since had two surgeries and is still in ICU at Royal Hobart Hospital.

Speaking to The Mercury newspaper in Tasmania, Cornelius' father David said it was too early to tell if the 24-year-old would play again.

"The doctor said this morning that if he did break his femur, it would have been better,” he said.

"What happened is, because he has dislocated his knee, when it went sideways and smashed his whole knee, it severed the vessel which supplies the bottom of your leg with blood.

"The surgeon was quite happy in what he found but it’s still a mess. He has got rods in his leg and he is in a bad way.

"At the moment, I feel footy is secondary.

"I know footy means a lot to him and it has been his life, but at the end of the day, it is his health and wellbeing and quality of life which is most important."

The Lions have also been rocked by the difficult news surrounding Cornelius, with GM - Football Operations, Dean Warren, extending well wishes to the family on the Club's behalf.

“Aaron is a terrific young man and was a popular member of the team during his five-year stint at the Club. So it goes without saying that we were all quite shocked and saddened to hear about his injury," Warren said.

“We’ll continue to follow his progress with interest and are hoping, for his sake, that he can make a full recovery.

“Everyone at the Lions is thinking of Aaron at this difficult time, and we obviously extend our best wishes to his family as well.”